Dietrich



(No Model.) 2'Sheets--Sheet 1.

.W. DIETBIOH. Machine for Shaping Piano L No. 24?,3i6. Patented 30,!881.

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% MW' flu I (No Model.) 2 SheetP-Sh'eet 2.

W. DIETRIOH. Machine for Shaping Piano Legs.

No, 241,386. 1 Patented May 10,1889.

j //7 A ZR a 17 N. PETERS, Fhoic-Lilhogmpher, Washinglon, D. C.

UNTTED STATES PATENT ()FFICE.

XVILLIAM DIETRIGH, OF BALTIMORE, MARYLAND.

MACHINE FOR SHAPING PIANO-LEGS.

SPECIFICATION forming part of Letters Patent No. 241,316, dated May 10, 1881.

Application filed March 18, 1881. (No model.)

To all whom it may concern Be it known that I, WILLIAM DIETRIGH, of the city and county of Baltimore, Maryland, have invented a new and useful Improvement in Machines for Shaping Piano-Legs, of which the following is a clear, full, and exact description, reference being bad to the accompanying drawings, making a part of this specification, in which Figure 1 is a front elevation of a machine, with my improvements attached. Fig. 2 shows a vertical section through aa: Fig. 3 is a horizontal section through y y. Fig. 4 is a view of a piano-leg as shaped by the machine.

My invention relates to machines for shaping the legs of pianos preparatory to the carving; and it consists in the combination ofdevices, as hereinafter described and claimed.

To enable others skilled in the art to make and use my invention, 1 will describe the exact manner in which I have carried it out.

111 the drawings, A is a frame-work, in which the cutter-block B vertically slides. On the lower portion of the block B are secured the cutters 0, having curved cutting edges, as shown at b, so formed that the portions-of the wood to form the outer edges of the deeper grooves will be the first to come in contact with the cutter and be out, ready for the chips to be cut out from the center of the deeper groove when the higher portion of the cutting-edge reaches the wood. The cutter is also carved on its vertical plane, as shown in Fig. 3, the

The cutter-block B may be operated by any of the well-known mechanical devices. I have shown a small toothed pinion, D, which may be operated by steam or other power, meshing with a large cogged wheel, E. This wheel carries on its shaft a crank, F, connected with an arm, G, pivoted to the face of the cutterblock, which is slotted at 0, to allow the block to rise and fall. It is evident from this construction that at every revolution of the wheel D the cutters will rise and fall. On the rear sides of each knife, at the point where, practically, the blade does no cutting, I secure the metal stiffeners and guides at, extending below the edges of the knives, so that when the wood is being fed under the descending knives and reaches these metal guides it is arrested, and the cutting is complete.

I am aware that planing-machines have been made with bits or cutters curved on their vertical planes and on their cutting-edges, and I do not claim such cutters, broadly, as my invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In a machine for shaping piano-legs, the cutters (J, curved on their vertical planes and on their cutting-edges, and provided with the stiffcners and guides m, in combination with the cutterblock B, and suitable mechanism for operating the same, substantially as and for the purpose herein set forth.

YVM. DIETRICH.

Witnesses:

JNo. L. GoNDRoN, T. WALTER FOWLER. 

